Process of manufacturing caoutchouc-like products.



FIRM OF CHEM'ISGEE FABRIK FLfiRSHE ON-THE-MMN, ennmanr.

as 'fxran r orroa;

"ammLn'o caaosmam; or moasHEIM-oN-THE-Mnm, GERMANY, ASSIGNOR To THE mDR. H. NOERDLINGER, or rLoRsHEm- PROCESS OF MANUFACTURINGCAOUTCHO'UG-LIKE PRODUCTS.

nearest. No Drawingl The subject-matter of my invention is a process ofmanufacturing caoutchouc-like products.

- It is well known. that fatty oils, particularly rape-oil andcastor-oil, after having been oxidized with air or oxygen are convertedwith the aid of sulfur or chlorid of sulfur into products similar tocaoutchoucwhich are extensively employed as caoutchouc substitutes.Also, more-or less solid products have been obtained from caster-oil bytreatment with chlorid of zinc or chlorid of aluminum. Now I have foundthat oxidized fatty oils'can be very readily condensed with formaldehydeto products having'similar properties. By oxidized oils are to beunderstoodsuch oils as have absorbed oxygen when air or oxygen is blowninto them or when they are exposed for a long time to the air, (of. e;g. Hefter, Technologz'eder Fette and Ode, Berlin, 1910, vol.

3., page. 371, paragraph 1'), the following,

amongothers, coming into question :oxi-

.dized rape-oil,castor-oil, sesame-oil, poppyoil, linseed-oil, olive-oiland fish-oil.

My process may be carried into practice as follows 300 kilos.castor-oil' which have been treated about hours at 140 to 180 C. with acurrent of air are mixed with 100 kilos. 40% formaldehyde and 100 kilos.50%

sulfuric acid and heated to about 80 to 90 The reaction at ,once takesplace with foaming, and the 'product congeals to a 1 new bodiescan besaponified with alkalis.

caoutchouc-like mass. This is cut into pggges after cooling andliberated from sulc acid and excess formaldehyde by washin with Water.Instead of sulfuric acid, 0t er condensation agents, such ashydrochloric acid salt solutions, etc., can be emlployed. These newproductsmaterially di er-fiom the condensation products obtained withformaldehyde from non-oxidiz'edj oils in that the latter productsaregiljand li u-id, whereas the former. are elas-.

tlcfscarce y adhesive, solid bodies. The

Specification of Letters Patent. Application filed August 2, 1911..

'or sulfuric acid, to the soap solutions obtained after thesaponificatlon, such fatty acids are separated which in their physicalproperties are viscous, elastic, and slightly 'like character fromthewell-known rosinlike condensation products obtained with tough, elasticbody is formed which is Patented July 9, rate. Serial No. 641,941;

By adding acids, for instance hydrochloric adhesive, but not oily or inthe form of a 'thin liquid. In contradistin ction thereto,-

the condensation products obtained from non-oxidized oils withformaldehyde yield 1 fatty acids of another kind when saponified 5 andtreated with hydrochloric or sulfuric acid, such fatty acids being inthe form of a @thin liquid and oily bodies.

A naodificat-ion of the process consists in treating mixtures of the'above characterized oxidized oils with phenols in the presence of acondensation agent with formaldehyde or a substance which producesformaldeh de. The new condensation products made from oxidized oilsdiffer in theirv gumformaldehyde from phenols. How this modification ofmy process may be carried -into practice will now be explained withreference to some examples :4 kilos. naph thol are dissolved in 50kilos. of oxidizedcast0r-oil, whereupon a mixture 20 kilos.

30% formaldehyde and 2% kilos. hydrochloric acid is added to thissolution. When heated to to 100 C. an exceedingly elastic solid body isformed. Instead of or in addition to the phenols other substances Whichgive reactions with aldehydes. such as vegetable and animal albumins orbodies containing albumin, 6. g. casein, milk, blood and the llke, maybe added to the reaction mixiire In this case I proceed, for example, afollows:

r *(I). 100 parts of castor-oil, treated for 12 hours at about 150 to200 C., are mixed, at a gentle heat, with 15 parts 30% formaldehyde, 5parts. concentrated hydrochloric acid and 30 parts casein, and heatedslowly to about C. At this temperature a Washed with water and dried.-

Y (11-)..100 parts castor-oil oxidized as under I, 15 parts 30%formaldehyde, 5 parts conc ntratedhydrochloric acid, 5 parts gelatin'ssolved in 15 parts water are treated '105 with thesame quantities offormaldehyde, hydrochloric acid, ca'sein or gelatin. Instead offormaldehyde other al'dehydes and substances such as carbo-hydrates,starchflour, sucrose, glucose,levulose and others can be employed. Thereaction takes place somewhat slower, it is true, but likewise yieldsvery elastic products. The process is then, for example, as followsExample I: 100 parts oxidized castor-o'il, 40 parts wheat-starch, 50parts sulfuric acid of sp. gr. 1.31 are intimately mixed together andheated, with agitation, on the waterbath until an elastic mass isproduced. The product thus obtained is liberated from excess sulfuricacid bykneading with water,

Example II: 100 parts oxidized castoroil, .20 parts sucrose, 20 partssulfuric acid of sp. gr. 1.185 are treated in the same manner asst-atedin Example I. c

Example 111: 100 parts oxidized linseed oil, 40 parts wheat-starch, 50parts sulfuric acid of sp. gr. 1.31 are treated as stated under Exampl'I. A solid, elastic, nonadhesive product is produced.

Example IV: 100 parts oxidized linseedoil, 20 parts sucrose, 20 parts.sulfuric acid of sp. gr. 1.185 are treated in the same man nor as above.

As the products obtained according to the present invention are to beused, among other purposes, in the manufacture of linoleum, artificialleather, packing and insulating materials, in order at once to producesuch products the reaction mass may have added to it indifferentsubstances and load ing materials which do not themselves need to enterinto reaction with the reaction sub-.

wood, cellulose,

powdered cork, powdered clay, earthy pigments, kieselguhr and otherloading materials of any stances, as e.- g.

desired kind according in each instance to the special properties whichthe finished products are to acquire.

I claim: 1. The hereindescribed process of manufacturing caoutchouc-likeproducts, which consists in treating oxidized oils in the presence of acondensation-agent with an aldehyde.

2. The hereindescribed process of manufacturing caoutchouc-like productswhich consists in treating oxidized oils in the presence of acondensation agent with formaldehyde.

3. The hereindescribed process of manufacturing caoutchouc-like productswhich consists in treating oxidized oils in the presence of acondensation agent with a substance which produces formaldehyde.

4. The hereindescribed process of manufacturing caoutchouc-likeproducts, which consists in treating mixtures of oxidized oils and'albumens in the presence of a condensation agent with an aldehyde.

5. The hereindescribed process of manufacturing 'caoutchouc-likeproducts, which consists in treating a mixture of oxidized oils andloading materials in the presence of a condensation agent with analdehyde.

In testimony whereof, I afiix my signature in the presence of twowitnesses.

' ARNALDO OAROSELLI.

Witnesses:

JEAN GRUND, CARL GRUND.

